#include <TM1637.h>

#define CLK 2   
#define DIO 3
TM1637 tm1637(CLK,DIO);

void setup() {
  // put your setup code here, to run once:
  tm1637.init();
  //BRIGHT_TYPICAL = 2,BRIGHT_DARKEST = 0,BRIGHTEST = 7;
  tm1637.set(BRIGHT_TYPICAL); 

  delay(1500);//Delay to let system boot
}

void loop() {
  // put your main code here, to run repeatedly:
  // 4 positions are 0, 1, 2, 3
  tm1637.display(1,2); 
  tm1637.display(2,5);
  tm1637.display(3,12);  // put a C at the end
  
  delay (3000);
  tm1637.clearDisplay();
  delay(1000);
}
